Drug reference
chlorpheniramine
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Drug class
Respiratory (Anti Histamine)
Mechanism of action
Chlorpheniramine competes with histamine for the histamine H1 receptor, reversible competitive inhibitor.
Common side effects
- Sedation
- Drowsiness
- Upset Stomach
Contraindications
- Documented hypersensitivity Lower respiratory disease, eg, asthma (controversial) Preemies & neonates Nursing women Acute asthma, sleep apnea
Related conditions
Frequently asked questions
What drug class is chlorpheniramine?
chlorpheniramine belongs to: Respiratory.
How does chlorpheniramine work?
Chlorpheniramine competes with histamine for the histamine H1 receptor, reversible competitive inhibitor.
What are the common side effects of chlorpheniramine?
Sedation, Drowsiness, Upset Stomach
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